Nuclear weapons are an expression of one side of our human character. But there is another side. The same rocket technology that delivers nuclear warheads has also taken us peacefully into space. From that perspective, we see our Earth as it really is - a small and fragile and beautiful blue globe, the only home we have. We see no barriers of race or religion or country. We see the essential unity of our species and our planet; and with faith and common sense, that bright vision will ultimately prevail.
Another major challenge, therefore, is to protect the quality of this world within which we live. The shadows that fail across the future are cast not only by the kinds of weapons we have built, but by the kind of world we will either nourish or neglect.